private Expression CombineExpressions(Expression expr1, Expression expr2, FilterStatementConnector connector)
{
return(connector == FilterStatementConnector.And
? Expression.AndAlso(expr1, expr2)
: Expression.OrElse(expr1, expr2));
}
/// <summary>
/// Adds a new <see cref="FilterStatement{TPropertyType}" /> to the <see cref="Filter{TClass}" />.
/// (To be used by <see cref="Operation" /> that need no values)
/// </summary>
/// <param name="propertyId">Property identifier conventionalized by for the Expression Builder.</param>
/// <param name="operation"></param>
/// <param name="connector"></param>
/// <returns></returns>
public IFilterStatementConnection By(string propertyId, Operation operation, FilterStatementConnector connector = FilterStatementConnector.And)
{
return(By <string>(propertyId, operation, null, null, connector));
}
/// <summary>
/// Adds a new <see cref="FilterStatement{TPropertyType}" /> to the <see cref="Filter{TClass}" />.
/// </summary>
/// <typeparam name="TPropertyType"></typeparam>
/// <param name="propertyId">Property identifier conventionalized by for the Expression Builder.</param>
/// <param name="operation"></param>
/// <param name="value"></param>
/// <param name="value2"></param>
/// <param name="connector"></param>
/// <returns></returns>
public IFilterStatementConnection By <TPropertyType>(string propertyId, Operation operation, TPropertyType value, TPropertyType value2 = default(TPropertyType), FilterStatementConnector connector = FilterStatementConnector.And)
{
IFilterStatement statement = new FilterStatement <TPropertyType>(propertyId, operation, value, value2, connector);
_statements.Add(statement);
return(new FilterStatementConnection <TClass>(this, statement));
}
/// <summary>
/// Instantiates a new <see cref="FilterStatement{TPropertyType}" />.
/// </summary>
/// <param name="propertyId"></param>
/// <param name="operation"></param>
/// <param name="value"></param>
/// <param name="value2"></param>
/// <param name="connector"></param>
public FilterStatement(string propertyId, Operation operation, TPropertyType value, TPropertyType value2 = default(TPropertyType), FilterStatementConnector connector = FilterStatementConnector.And)
{
PropertyId = propertyId;
Connector = connector;
Operation = operation;
if (typeof(TPropertyType).IsArray)
{
if (operation != Operation.Contains && operation != Operation.In)
{
throw new ArgumentException("Only 'Operacao.Contains' and 'Operacao.In' support arrays as parameters.");
}
var listType = typeof(List <>);
var constructedListType = listType.MakeGenericType(typeof(TPropertyType).GetElementType());
Value = value != null?Activator.CreateInstance(constructedListType, value) : null;
Value2 = value2 != null?Activator.CreateInstance(constructedListType, value2) : null;
}
else
{
Value = value;
Value2 = value2;
}
Validate();
}
